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GPM Ground Validation Environment Canada (EC) Snow Surveys GCPEx Table of Contents
The GPM Ground Validation Environment Canada (EC) Snow Surveys GCPEx data set includes weekly measurements of snow depth, water equivalents, and density transects collected in Ontario, Canada at four sites (CARE, Steamshow, Huronia Airport, and Skydive-Jump) during the period from January 5, 2012 to February 27, 2012. Along 100 meter transects at each site, snow depth measurements were made every 50 centimeters using a GPS equipped snow depth probe. Pairs of bulk density and snow water equivalent measurements were obtained every 25 meters using an ESC (30 cm2 cross sectional area) snow corer. The data was collected for the GPM Cold-season Precipitation Experiment (GCPEx) campaign and is available in .xls Microsoft Excel 97-2003 Worksheet format. Derksen, C. 2014. GPM Ground Validation Environment Canada (EC) Snow Depth GCPEx [indicate subset used]. Data set available online [http://ghrc.nsstc.nasa.gov] from the NASA EOSDIS Global Hydrology Resource Center Distributed Active Archive Center Huntsville, Alabama, U.S.A. doi: 10.5067/GPMGV/GCPEX/PROBES/DATA101 The GPM Cold-season Precipitation Experiment (GCPEx) occurred in Ontario, Canada during the winter season of 2011-2012. GCPEx addressed shortcomings in the GPM snowfall retrieval algorithm by collecting microphysical properties, associated remote sensing observations, and coordinated model simulations of precipitating snow. These data sets were collected to aid in the achievement of the over arching goal of GCPEx which is to characterize the ability of multi-frequency active and passive microwave sensors to detect and estimate falling snow. During GCPEX, measurements from a GPS equipped snow depth probe and an ESC-30 snow corer were taken at four sites (CARE, Steamshow, Huronia Airport, and Skydive-Jump). The coordinates of these sites are. The GCPEX site coordinates are:
Data was collected from January 20, 2012 to February 27, 2012. Further details on GCPEx are available at http://gpm.nsstc.nasa.gov/gcpex. Information on the Global Precipitation Measurement (GPM) mission is available at http://pmm.nasa.gov/GPM. A GPS equipped magna-probe and a large diameter Eastern Snow Conference (ESC)-30 metric snow sampler with a cutter area of 30 cm2 were used to take measurements along 100 meter transects at the CARE, Steamshow, Huronia Airport, and Skydive-Jump sites. The magna-probe collected measurements of snow depth every 50 centimeters along each transect. The ESC-30 sampler is the current standard sampler used by the Atmospheric Environment Service (AES) for shallow snowpack regions. This sampler took pairs of bulk density and snow water equivalent (SWE) measurements every 25 meters along the same transects. The pairs of the SWE cores were taken on either side of the transect line (2 measurements about 1 metre apart at 0 m; 2 measurements about 1 metre apart at 25 metres, etc.). Chris Derksen The GPM Ground Validation Environment Canada (EC) Snow Surveys GCPEx data set consists of a .xls Microsoft Excel 97-2003 Worksheet file named:
where,
The file contains weekly measurements of snow depth, water equivalents, and snow density during the study period. Data FormatThe GPM Ground Validation Environment Canada (EC) Snow Surveys GCPEx data set is available in .xls Microsoft Excel 97-2003 Worksheet format. To order these data or for further information, please contact:
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